<HTML>
<BODY BGCOLOR="white">
<PRE>
<FONT color="green">001</FONT>    /*<a name="line.1"></a>
<FONT color="green">002</FONT>     * Licensed to the Apache Software Foundation (ASF) under one or more<a name="line.2"></a>
<FONT color="green">003</FONT>     * contributor license agreements.  See the NOTICE file distributed with<a name="line.3"></a>
<FONT color="green">004</FONT>     * this work for additional information regarding copyright ownership.<a name="line.4"></a>
<FONT color="green">005</FONT>     * The ASF licenses this file to You under the Apache License, Version 2.0<a name="line.5"></a>
<FONT color="green">006</FONT>     * (the "License"); you may not use this file except in compliance with<a name="line.6"></a>
<FONT color="green">007</FONT>     * the License.  You may obtain a copy of the License at<a name="line.7"></a>
<FONT color="green">008</FONT>     *<a name="line.8"></a>
<FONT color="green">009</FONT>     *     http://www.apache.org/licenses/LICENSE-2.0<a name="line.9"></a>
<FONT color="green">010</FONT>     *<a name="line.10"></a>
<FONT color="green">011</FONT>     * Unless required by applicable law or agreed to in writing, software<a name="line.11"></a>
<FONT color="green">012</FONT>     * distributed under the License is distributed on an "AS IS" BASIS,<a name="line.12"></a>
<FONT color="green">013</FONT>     * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.<a name="line.13"></a>
<FONT color="green">014</FONT>     * See the License for the specific language governing permissions and<a name="line.14"></a>
<FONT color="green">015</FONT>     * limitations under the License.<a name="line.15"></a>
<FONT color="green">016</FONT>     */<a name="line.16"></a>
<FONT color="green">017</FONT>    package org.apache.commons.configuration.beanutils;<a name="line.17"></a>
<FONT color="green">018</FONT>    <a name="line.18"></a>
<FONT color="green">019</FONT>    import java.beans.PropertyDescriptor;<a name="line.19"></a>
<FONT color="green">020</FONT>    import java.lang.reflect.InvocationTargetException;<a name="line.20"></a>
<FONT color="green">021</FONT>    import java.util.Collection;<a name="line.21"></a>
<FONT color="green">022</FONT>    import java.util.Collections;<a name="line.22"></a>
<FONT color="green">023</FONT>    import java.util.HashMap;<a name="line.23"></a>
<FONT color="green">024</FONT>    import java.util.List;<a name="line.24"></a>
<FONT color="green">025</FONT>    import java.util.Map;<a name="line.25"></a>
<FONT color="green">026</FONT>    import java.util.Set;<a name="line.26"></a>
<FONT color="green">027</FONT>    <a name="line.27"></a>
<FONT color="green">028</FONT>    import org.apache.commons.beanutils.BeanUtils;<a name="line.28"></a>
<FONT color="green">029</FONT>    import org.apache.commons.beanutils.PropertyUtils;<a name="line.29"></a>
<FONT color="green">030</FONT>    import org.apache.commons.configuration.ConfigurationRuntimeException;<a name="line.30"></a>
<FONT color="green">031</FONT>    import org.apache.commons.lang.ClassUtils;<a name="line.31"></a>
<FONT color="green">032</FONT>    <a name="line.32"></a>
<FONT color="green">033</FONT>    /**<a name="line.33"></a>
<FONT color="green">034</FONT>     * &lt;p&gt;<a name="line.34"></a>
<FONT color="green">035</FONT>     * A helper class for creating bean instances that are defined in configuration<a name="line.35"></a>
<FONT color="green">036</FONT>     * files.<a name="line.36"></a>
<FONT color="green">037</FONT>     * &lt;/p&gt;<a name="line.37"></a>
<FONT color="green">038</FONT>     * &lt;p&gt;<a name="line.38"></a>
<FONT color="green">039</FONT>     * This class provides static utility methods related to bean creation<a name="line.39"></a>
<FONT color="green">040</FONT>     * operations. These methods simplify such operations because a client need not<a name="line.40"></a>
<FONT color="green">041</FONT>     * deal with all involved interfaces. Usually, if a bean declaration has already<a name="line.41"></a>
<FONT color="green">042</FONT>     * been obtained, a single method call is necessary to create a new bean<a name="line.42"></a>
<FONT color="green">043</FONT>     * instance.<a name="line.43"></a>
<FONT color="green">044</FONT>     * &lt;/p&gt;<a name="line.44"></a>
<FONT color="green">045</FONT>     * &lt;p&gt;<a name="line.45"></a>
<FONT color="green">046</FONT>     * This class also supports the registration of custom bean factories.<a name="line.46"></a>
<FONT color="green">047</FONT>     * Implementations of the {@link BeanFactory} interface can be<a name="line.47"></a>
<FONT color="green">048</FONT>     * registered under a symbolic name using the {@code registerBeanFactory()}<a name="line.48"></a>
<FONT color="green">049</FONT>     * method. In the configuration file the name of the bean factory can be<a name="line.49"></a>
<FONT color="green">050</FONT>     * specified in the bean declaration. Then this factory will be used to create<a name="line.50"></a>
<FONT color="green">051</FONT>     * the bean.<a name="line.51"></a>
<FONT color="green">052</FONT>     * &lt;/p&gt;<a name="line.52"></a>
<FONT color="green">053</FONT>     *<a name="line.53"></a>
<FONT color="green">054</FONT>     * @since 1.3<a name="line.54"></a>
<FONT color="green">055</FONT>     * @author &lt;a<a name="line.55"></a>
<FONT color="green">056</FONT>     * href="http://commons.apache.org/configuration/team-list.html"&gt;Commons<a name="line.56"></a>
<FONT color="green">057</FONT>     * Configuration team&lt;/a&gt;<a name="line.57"></a>
<FONT color="green">058</FONT>     * @version $Id: BeanHelper.java 1366932 2012-07-29 20:06:31Z oheger $<a name="line.58"></a>
<FONT color="green">059</FONT>     */<a name="line.59"></a>
<FONT color="green">060</FONT>    public final class BeanHelper<a name="line.60"></a>
<FONT color="green">061</FONT>    {<a name="line.61"></a>
<FONT color="green">062</FONT>        /** Stores a map with the registered bean factories. */<a name="line.62"></a>
<FONT color="green">063</FONT>        private static final Map&lt;String, BeanFactory&gt; BEAN_FACTORIES = Collections<a name="line.63"></a>
<FONT color="green">064</FONT>                .synchronizedMap(new HashMap&lt;String, BeanFactory&gt;());<a name="line.64"></a>
<FONT color="green">065</FONT>    <a name="line.65"></a>
<FONT color="green">066</FONT>        /**<a name="line.66"></a>
<FONT color="green">067</FONT>         * Stores the default bean factory, which will be used if no other factory<a name="line.67"></a>
<FONT color="green">068</FONT>         * is provided.<a name="line.68"></a>
<FONT color="green">069</FONT>         */<a name="line.69"></a>
<FONT color="green">070</FONT>        private static BeanFactory defaultBeanFactory = DefaultBeanFactory.INSTANCE;<a name="line.70"></a>
<FONT color="green">071</FONT>    <a name="line.71"></a>
<FONT color="green">072</FONT>        /**<a name="line.72"></a>
<FONT color="green">073</FONT>         * Private constructor, so no instances can be created.<a name="line.73"></a>
<FONT color="green">074</FONT>         */<a name="line.74"></a>
<FONT color="green">075</FONT>        private BeanHelper()<a name="line.75"></a>
<FONT color="green">076</FONT>        {<a name="line.76"></a>
<FONT color="green">077</FONT>        }<a name="line.77"></a>
<FONT color="green">078</FONT>    <a name="line.78"></a>
<FONT color="green">079</FONT>        /**<a name="line.79"></a>
<FONT color="green">080</FONT>         * Register a bean factory under a symbolic name. This factory object can<a name="line.80"></a>
<FONT color="green">081</FONT>         * then be specified in bean declarations with the effect that this factory<a name="line.81"></a>
<FONT color="green">082</FONT>         * will be used to obtain an instance for the corresponding bean<a name="line.82"></a>
<FONT color="green">083</FONT>         * declaration.<a name="line.83"></a>
<FONT color="green">084</FONT>         *<a name="line.84"></a>
<FONT color="green">085</FONT>         * @param name the name of the factory<a name="line.85"></a>
<FONT color="green">086</FONT>         * @param factory the factory to be registered<a name="line.86"></a>
<FONT color="green">087</FONT>         */<a name="line.87"></a>
<FONT color="green">088</FONT>        public static void registerBeanFactory(String name, BeanFactory factory)<a name="line.88"></a>
<FONT color="green">089</FONT>        {<a name="line.89"></a>
<FONT color="green">090</FONT>            if (name == null)<a name="line.90"></a>
<FONT color="green">091</FONT>            {<a name="line.91"></a>
<FONT color="green">092</FONT>                throw new IllegalArgumentException(<a name="line.92"></a>
<FONT color="green">093</FONT>                        "Name for bean factory must not be null!");<a name="line.93"></a>
<FONT color="green">094</FONT>            }<a name="line.94"></a>
<FONT color="green">095</FONT>            if (factory == null)<a name="line.95"></a>
<FONT color="green">096</FONT>            {<a name="line.96"></a>
<FONT color="green">097</FONT>                throw new IllegalArgumentException("Bean factory must not be null!");<a name="line.97"></a>
<FONT color="green">098</FONT>            }<a name="line.98"></a>
<FONT color="green">099</FONT>    <a name="line.99"></a>
<FONT color="green">100</FONT>            BEAN_FACTORIES.put(name, factory);<a name="line.100"></a>
<FONT color="green">101</FONT>        }<a name="line.101"></a>
<FONT color="green">102</FONT>    <a name="line.102"></a>
<FONT color="green">103</FONT>        /**<a name="line.103"></a>
<FONT color="green">104</FONT>         * Deregisters the bean factory with the given name. After that this factory<a name="line.104"></a>
<FONT color="green">105</FONT>         * cannot be used any longer.<a name="line.105"></a>
<FONT color="green">106</FONT>         *<a name="line.106"></a>
<FONT color="green">107</FONT>         * @param name the name of the factory to be deregistered<a name="line.107"></a>
<FONT color="green">108</FONT>         * @return the factory that was registered under this name; &lt;b&gt;null&lt;/b&gt; if<a name="line.108"></a>
<FONT color="green">109</FONT>         * there was no such factory<a name="line.109"></a>
<FONT color="green">110</FONT>         */<a name="line.110"></a>
<FONT color="green">111</FONT>        public static BeanFactory deregisterBeanFactory(String name)<a name="line.111"></a>
<FONT color="green">112</FONT>        {<a name="line.112"></a>
<FONT color="green">113</FONT>            return BEAN_FACTORIES.remove(name);<a name="line.113"></a>
<FONT color="green">114</FONT>        }<a name="line.114"></a>
<FONT color="green">115</FONT>    <a name="line.115"></a>
<FONT color="green">116</FONT>        /**<a name="line.116"></a>
<FONT color="green">117</FONT>         * Returns a set with the names of all currently registered bean factories.<a name="line.117"></a>
<FONT color="green">118</FONT>         *<a name="line.118"></a>
<FONT color="green">119</FONT>         * @return a set with the names of the registered bean factories<a name="line.119"></a>
<FONT color="green">120</FONT>         */<a name="line.120"></a>
<FONT color="green">121</FONT>        public static Set&lt;String&gt; registeredFactoryNames()<a name="line.121"></a>
<FONT color="green">122</FONT>        {<a name="line.122"></a>
<FONT color="green">123</FONT>            return BEAN_FACTORIES.keySet();<a name="line.123"></a>
<FONT color="green">124</FONT>        }<a name="line.124"></a>
<FONT color="green">125</FONT>    <a name="line.125"></a>
<FONT color="green">126</FONT>        /**<a name="line.126"></a>
<FONT color="green">127</FONT>         * Returns the default bean factory.<a name="line.127"></a>
<FONT color="green">128</FONT>         *<a name="line.128"></a>
<FONT color="green">129</FONT>         * @return the default bean factory<a name="line.129"></a>
<FONT color="green">130</FONT>         */<a name="line.130"></a>
<FONT color="green">131</FONT>        public static BeanFactory getDefaultBeanFactory()<a name="line.131"></a>
<FONT color="green">132</FONT>        {<a name="line.132"></a>
<FONT color="green">133</FONT>            return defaultBeanFactory;<a name="line.133"></a>
<FONT color="green">134</FONT>        }<a name="line.134"></a>
<FONT color="green">135</FONT>    <a name="line.135"></a>
<FONT color="green">136</FONT>        /**<a name="line.136"></a>
<FONT color="green">137</FONT>         * Sets the default bean factory. This factory will be used for all create<a name="line.137"></a>
<FONT color="green">138</FONT>         * operations, for which no special factory is provided in the bean<a name="line.138"></a>
<FONT color="green">139</FONT>         * declaration.<a name="line.139"></a>
<FONT color="green">140</FONT>         *<a name="line.140"></a>
<FONT color="green">141</FONT>         * @param factory the default bean factory (must not be &lt;b&gt;null&lt;/b&gt;)<a name="line.141"></a>
<FONT color="green">142</FONT>         */<a name="line.142"></a>
<FONT color="green">143</FONT>        public static void setDefaultBeanFactory(BeanFactory factory)<a name="line.143"></a>
<FONT color="green">144</FONT>        {<a name="line.144"></a>
<FONT color="green">145</FONT>            if (factory == null)<a name="line.145"></a>
<FONT color="green">146</FONT>            {<a name="line.146"></a>
<FONT color="green">147</FONT>                throw new IllegalArgumentException(<a name="line.147"></a>
<FONT color="green">148</FONT>                        "Default bean factory must not be null!");<a name="line.148"></a>
<FONT color="green">149</FONT>            }<a name="line.149"></a>
<FONT color="green">150</FONT>            defaultBeanFactory = factory;<a name="line.150"></a>
<FONT color="green">151</FONT>        }<a name="line.151"></a>
<FONT color="green">152</FONT>    <a name="line.152"></a>
<FONT color="green">153</FONT>        /**<a name="line.153"></a>
<FONT color="green">154</FONT>         * Initializes the passed in bean. This method will obtain all the bean's<a name="line.154"></a>
<FONT color="green">155</FONT>         * properties that are defined in the passed in bean declaration. These<a name="line.155"></a>
<FONT color="green">156</FONT>         * properties will be set on the bean. If necessary, further beans will be<a name="line.156"></a>
<FONT color="green">157</FONT>         * created recursively.<a name="line.157"></a>
<FONT color="green">158</FONT>         *<a name="line.158"></a>
<FONT color="green">159</FONT>         * @param bean the bean to be initialized<a name="line.159"></a>
<FONT color="green">160</FONT>         * @param data the bean declaration<a name="line.160"></a>
<FONT color="green">161</FONT>         * @throws ConfigurationRuntimeException if a property cannot be set<a name="line.161"></a>
<FONT color="green">162</FONT>         */<a name="line.162"></a>
<FONT color="green">163</FONT>        public static void initBean(Object bean, BeanDeclaration data)<a name="line.163"></a>
<FONT color="green">164</FONT>                throws ConfigurationRuntimeException<a name="line.164"></a>
<FONT color="green">165</FONT>        {<a name="line.165"></a>
<FONT color="green">166</FONT>            initBeanProperties(bean, data);<a name="line.166"></a>
<FONT color="green">167</FONT>    <a name="line.167"></a>
<FONT color="green">168</FONT>            Map&lt;String, Object&gt; nestedBeans = data.getNestedBeanDeclarations();<a name="line.168"></a>
<FONT color="green">169</FONT>            if (nestedBeans != null)<a name="line.169"></a>
<FONT color="green">170</FONT>            {<a name="line.170"></a>
<FONT color="green">171</FONT>                if (bean instanceof Collection)<a name="line.171"></a>
<FONT color="green">172</FONT>                {<a name="line.172"></a>
<FONT color="green">173</FONT>                    // This is safe because the collection stores the values of the<a name="line.173"></a>
<FONT color="green">174</FONT>                    // nested beans.<a name="line.174"></a>
<FONT color="green">175</FONT>                    @SuppressWarnings("unchecked")<a name="line.175"></a>
<FONT color="green">176</FONT>                    Collection&lt;Object&gt; coll = (Collection&lt;Object&gt;) bean;<a name="line.176"></a>
<FONT color="green">177</FONT>                    if (nestedBeans.size() == 1)<a name="line.177"></a>
<FONT color="green">178</FONT>                    {<a name="line.178"></a>
<FONT color="green">179</FONT>                        Map.Entry&lt;String, Object&gt; e = nestedBeans.entrySet().iterator().next();<a name="line.179"></a>
<FONT color="green">180</FONT>                        String propName = e.getKey();<a name="line.180"></a>
<FONT color="green">181</FONT>                        Class&lt;?&gt; defaultClass = getDefaultClass(bean, propName);<a name="line.181"></a>
<FONT color="green">182</FONT>                        if (e.getValue() instanceof List)<a name="line.182"></a>
<FONT color="green">183</FONT>                        {<a name="line.183"></a>
<FONT color="green">184</FONT>                            // This is safe, provided that the bean declaration is implemented<a name="line.184"></a>
<FONT color="green">185</FONT>                            // correctly.<a name="line.185"></a>
<FONT color="green">186</FONT>                            @SuppressWarnings("unchecked")<a name="line.186"></a>
<FONT color="green">187</FONT>                            List&lt;BeanDeclaration&gt; decls = (List&lt;BeanDeclaration&gt;) e.getValue();<a name="line.187"></a>
<FONT color="green">188</FONT>                            for (BeanDeclaration decl : decls)<a name="line.188"></a>
<FONT color="green">189</FONT>                            {<a name="line.189"></a>
<FONT color="green">190</FONT>                                coll.add(createBean(decl, defaultClass));<a name="line.190"></a>
<FONT color="green">191</FONT>                            }<a name="line.191"></a>
<FONT color="green">192</FONT>                        }<a name="line.192"></a>
<FONT color="green">193</FONT>                        else<a name="line.193"></a>
<FONT color="green">194</FONT>                        {<a name="line.194"></a>
<FONT color="green">195</FONT>                            BeanDeclaration decl = (BeanDeclaration) e.getValue();<a name="line.195"></a>
<FONT color="green">196</FONT>                            coll.add(createBean(decl, defaultClass));<a name="line.196"></a>
<FONT color="green">197</FONT>                        }<a name="line.197"></a>
<FONT color="green">198</FONT>                    }<a name="line.198"></a>
<FONT color="green">199</FONT>                }<a name="line.199"></a>
<FONT color="green">200</FONT>                else<a name="line.200"></a>
<FONT color="green">201</FONT>                {<a name="line.201"></a>
<FONT color="green">202</FONT>                    for (Map.Entry&lt;String, Object&gt; e : nestedBeans.entrySet())<a name="line.202"></a>
<FONT color="green">203</FONT>                    {<a name="line.203"></a>
<FONT color="green">204</FONT>                        String propName = e.getKey();<a name="line.204"></a>
<FONT color="green">205</FONT>                        Class&lt;?&gt; defaultClass = getDefaultClass(bean, propName);<a name="line.205"></a>
<FONT color="green">206</FONT>                        initProperty(bean, propName, createBean(<a name="line.206"></a>
<FONT color="green">207</FONT>                            (BeanDeclaration) e.getValue(), defaultClass));<a name="line.207"></a>
<FONT color="green">208</FONT>                    }<a name="line.208"></a>
<FONT color="green">209</FONT>                }<a name="line.209"></a>
<FONT color="green">210</FONT>            }<a name="line.210"></a>
<FONT color="green">211</FONT>        }<a name="line.211"></a>
<FONT color="green">212</FONT>    <a name="line.212"></a>
<FONT color="green">213</FONT>        /**<a name="line.213"></a>
<FONT color="green">214</FONT>         * Initializes the beans properties.<a name="line.214"></a>
<FONT color="green">215</FONT>         *<a name="line.215"></a>
<FONT color="green">216</FONT>         * @param bean the bean to be initialized<a name="line.216"></a>
<FONT color="green">217</FONT>         * @param data the bean declaration<a name="line.217"></a>
<FONT color="green">218</FONT>         * @throws ConfigurationRuntimeException if a property cannot be set<a name="line.218"></a>
<FONT color="green">219</FONT>         */<a name="line.219"></a>
<FONT color="green">220</FONT>        public static void initBeanProperties(Object bean, BeanDeclaration data)<a name="line.220"></a>
<FONT color="green">221</FONT>                throws ConfigurationRuntimeException<a name="line.221"></a>
<FONT color="green">222</FONT>        {<a name="line.222"></a>
<FONT color="green">223</FONT>            Map&lt;String, Object&gt; properties = data.getBeanProperties();<a name="line.223"></a>
<FONT color="green">224</FONT>            if (properties != null)<a name="line.224"></a>
<FONT color="green">225</FONT>            {<a name="line.225"></a>
<FONT color="green">226</FONT>                for (Map.Entry&lt;String, Object&gt; e : properties.entrySet())<a name="line.226"></a>
<FONT color="green">227</FONT>                {<a name="line.227"></a>
<FONT color="green">228</FONT>                    String propName = e.getKey();<a name="line.228"></a>
<FONT color="green">229</FONT>                    initProperty(bean, propName, e.getValue());<a name="line.229"></a>
<FONT color="green">230</FONT>                }<a name="line.230"></a>
<FONT color="green">231</FONT>            }<a name="line.231"></a>
<FONT color="green">232</FONT>        }<a name="line.232"></a>
<FONT color="green">233</FONT>    <a name="line.233"></a>
<FONT color="green">234</FONT>        /**<a name="line.234"></a>
<FONT color="green">235</FONT>         * Return the Class of the property if it can be determined.<a name="line.235"></a>
<FONT color="green">236</FONT>         * @param bean The bean containing the property.<a name="line.236"></a>
<FONT color="green">237</FONT>         * @param propName The name of the property.<a name="line.237"></a>
<FONT color="green">238</FONT>         * @return The class associated with the property or null.<a name="line.238"></a>
<FONT color="green">239</FONT>         */<a name="line.239"></a>
<FONT color="green">240</FONT>        private static Class&lt;?&gt; getDefaultClass(Object bean, String propName)<a name="line.240"></a>
<FONT color="green">241</FONT>        {<a name="line.241"></a>
<FONT color="green">242</FONT>            try<a name="line.242"></a>
<FONT color="green">243</FONT>            {<a name="line.243"></a>
<FONT color="green">244</FONT>                PropertyDescriptor desc = PropertyUtils.getPropertyDescriptor(bean, propName);<a name="line.244"></a>
<FONT color="green">245</FONT>                if (desc == null)<a name="line.245"></a>
<FONT color="green">246</FONT>                {<a name="line.246"></a>
<FONT color="green">247</FONT>                    return null;<a name="line.247"></a>
<FONT color="green">248</FONT>                }<a name="line.248"></a>
<FONT color="green">249</FONT>                return desc.getPropertyType();<a name="line.249"></a>
<FONT color="green">250</FONT>            }<a name="line.250"></a>
<FONT color="green">251</FONT>            catch (Exception ex)<a name="line.251"></a>
<FONT color="green">252</FONT>            {<a name="line.252"></a>
<FONT color="green">253</FONT>                return null;<a name="line.253"></a>
<FONT color="green">254</FONT>            }<a name="line.254"></a>
<FONT color="green">255</FONT>        }<a name="line.255"></a>
<FONT color="green">256</FONT>    <a name="line.256"></a>
<FONT color="green">257</FONT>        /**<a name="line.257"></a>
<FONT color="green">258</FONT>         * Sets a property on the given bean using Common Beanutils.<a name="line.258"></a>
<FONT color="green">259</FONT>         *<a name="line.259"></a>
<FONT color="green">260</FONT>         * @param bean the bean<a name="line.260"></a>
<FONT color="green">261</FONT>         * @param propName the name of the property<a name="line.261"></a>
<FONT color="green">262</FONT>         * @param value the property's value<a name="line.262"></a>
<FONT color="green">263</FONT>         * @throws ConfigurationRuntimeException if the property is not writeable or<a name="line.263"></a>
<FONT color="green">264</FONT>         * an error occurred<a name="line.264"></a>
<FONT color="green">265</FONT>         */<a name="line.265"></a>
<FONT color="green">266</FONT>        private static void initProperty(Object bean, String propName, Object value)<a name="line.266"></a>
<FONT color="green">267</FONT>                throws ConfigurationRuntimeException<a name="line.267"></a>
<FONT color="green">268</FONT>        {<a name="line.268"></a>
<FONT color="green">269</FONT>            if (!PropertyUtils.isWriteable(bean, propName))<a name="line.269"></a>
<FONT color="green">270</FONT>            {<a name="line.270"></a>
<FONT color="green">271</FONT>                throw new ConfigurationRuntimeException("Property " + propName<a name="line.271"></a>
<FONT color="green">272</FONT>                        + " cannot be set on " + bean.getClass().getName());<a name="line.272"></a>
<FONT color="green">273</FONT>            }<a name="line.273"></a>
<FONT color="green">274</FONT>    <a name="line.274"></a>
<FONT color="green">275</FONT>            try<a name="line.275"></a>
<FONT color="green">276</FONT>            {<a name="line.276"></a>
<FONT color="green">277</FONT>                BeanUtils.setProperty(bean, propName, value);<a name="line.277"></a>
<FONT color="green">278</FONT>            }<a name="line.278"></a>
<FONT color="green">279</FONT>            catch (IllegalAccessException iaex)<a name="line.279"></a>
<FONT color="green">280</FONT>            {<a name="line.280"></a>
<FONT color="green">281</FONT>                throw new ConfigurationRuntimeException(iaex);<a name="line.281"></a>
<FONT color="green">282</FONT>            }<a name="line.282"></a>
<FONT color="green">283</FONT>            catch (InvocationTargetException itex)<a name="line.283"></a>
<FONT color="green">284</FONT>            {<a name="line.284"></a>
<FONT color="green">285</FONT>                throw new ConfigurationRuntimeException(itex);<a name="line.285"></a>
<FONT color="green">286</FONT>            }<a name="line.286"></a>
<FONT color="green">287</FONT>        }<a name="line.287"></a>
<FONT color="green">288</FONT>    <a name="line.288"></a>
<FONT color="green">289</FONT>        /**<a name="line.289"></a>
<FONT color="green">290</FONT>         * Set a property on the bean only if the property exists<a name="line.290"></a>
<FONT color="green">291</FONT>         *<a name="line.291"></a>
<FONT color="green">292</FONT>         * @param bean the bean<a name="line.292"></a>
<FONT color="green">293</FONT>         * @param propName the name of the property<a name="line.293"></a>
<FONT color="green">294</FONT>         * @param value the property's value<a name="line.294"></a>
<FONT color="green">295</FONT>         * @throws ConfigurationRuntimeException if the property is not writeable or<a name="line.295"></a>
<FONT color="green">296</FONT>         *         an error occurred<a name="line.296"></a>
<FONT color="green">297</FONT>         */<a name="line.297"></a>
<FONT color="green">298</FONT>        public static void setProperty(Object bean, String propName, Object value)<a name="line.298"></a>
<FONT color="green">299</FONT>        {<a name="line.299"></a>
<FONT color="green">300</FONT>            if (PropertyUtils.isWriteable(bean, propName))<a name="line.300"></a>
<FONT color="green">301</FONT>            {<a name="line.301"></a>
<FONT color="green">302</FONT>                initProperty(bean, propName, value);<a name="line.302"></a>
<FONT color="green">303</FONT>            }<a name="line.303"></a>
<FONT color="green">304</FONT>        }<a name="line.304"></a>
<FONT color="green">305</FONT>    <a name="line.305"></a>
<FONT color="green">306</FONT>        /**<a name="line.306"></a>
<FONT color="green">307</FONT>         * The main method for creating and initializing beans from a configuration.<a name="line.307"></a>
<FONT color="green">308</FONT>         * This method will return an initialized instance of the bean class<a name="line.308"></a>
<FONT color="green">309</FONT>         * specified in the passed in bean declaration. If this declaration does not<a name="line.309"></a>
<FONT color="green">310</FONT>         * contain the class of the bean, the passed in default class will be used.<a name="line.310"></a>
<FONT color="green">311</FONT>         * From the bean declaration the factory to be used for creating the bean is<a name="line.311"></a>
<FONT color="green">312</FONT>         * queried. The declaration may here return &lt;b&gt;null&lt;/b&gt;, then a default<a name="line.312"></a>
<FONT color="green">313</FONT>         * factory is used. This factory is then invoked to perform the create<a name="line.313"></a>
<FONT color="green">314</FONT>         * operation.<a name="line.314"></a>
<FONT color="green">315</FONT>         *<a name="line.315"></a>
<FONT color="green">316</FONT>         * @param data the bean declaration<a name="line.316"></a>
<FONT color="green">317</FONT>         * @param defaultClass the default class to use<a name="line.317"></a>
<FONT color="green">318</FONT>         * @param param an additional parameter that will be passed to the bean<a name="line.318"></a>
<FONT color="green">319</FONT>         * factory; some factories may support parameters and behave different<a name="line.319"></a>
<FONT color="green">320</FONT>         * depending on the value passed in here<a name="line.320"></a>
<FONT color="green">321</FONT>         * @return the new bean<a name="line.321"></a>
<FONT color="green">322</FONT>         * @throws ConfigurationRuntimeException if an error occurs<a name="line.322"></a>
<FONT color="green">323</FONT>         */<a name="line.323"></a>
<FONT color="green">324</FONT>        public static Object createBean(BeanDeclaration data, Class&lt;?&gt; defaultClass,<a name="line.324"></a>
<FONT color="green">325</FONT>                Object param) throws ConfigurationRuntimeException<a name="line.325"></a>
<FONT color="green">326</FONT>        {<a name="line.326"></a>
<FONT color="green">327</FONT>            if (data == null)<a name="line.327"></a>
<FONT color="green">328</FONT>            {<a name="line.328"></a>
<FONT color="green">329</FONT>                throw new IllegalArgumentException(<a name="line.329"></a>
<FONT color="green">330</FONT>                        "Bean declaration must not be null!");<a name="line.330"></a>
<FONT color="green">331</FONT>            }<a name="line.331"></a>
<FONT color="green">332</FONT>    <a name="line.332"></a>
<FONT color="green">333</FONT>            BeanFactory factory = fetchBeanFactory(data);<a name="line.333"></a>
<FONT color="green">334</FONT>            try<a name="line.334"></a>
<FONT color="green">335</FONT>            {<a name="line.335"></a>
<FONT color="green">336</FONT>                return factory.createBean(fetchBeanClass(data, defaultClass,<a name="line.336"></a>
<FONT color="green">337</FONT>                        factory), data, param);<a name="line.337"></a>
<FONT color="green">338</FONT>            }<a name="line.338"></a>
<FONT color="green">339</FONT>            catch (Exception ex)<a name="line.339"></a>
<FONT color="green">340</FONT>            {<a name="line.340"></a>
<FONT color="green">341</FONT>                throw new ConfigurationRuntimeException(ex);<a name="line.341"></a>
<FONT color="green">342</FONT>            }<a name="line.342"></a>
<FONT color="green">343</FONT>        }<a name="line.343"></a>
<FONT color="green">344</FONT>    <a name="line.344"></a>
<FONT color="green">345</FONT>        /**<a name="line.345"></a>
<FONT color="green">346</FONT>         * Returns a bean instance for the specified declaration. This method is a<a name="line.346"></a>
<FONT color="green">347</FONT>         * short cut for {@code createBean(data, null, null);}.<a name="line.347"></a>
<FONT color="green">348</FONT>         *<a name="line.348"></a>
<FONT color="green">349</FONT>         * @param data the bean declaration<a name="line.349"></a>
<FONT color="green">350</FONT>         * @param defaultClass the class to be used when in the declaration no class<a name="line.350"></a>
<FONT color="green">351</FONT>         * is specified<a name="line.351"></a>
<FONT color="green">352</FONT>         * @return the new bean<a name="line.352"></a>
<FONT color="green">353</FONT>         * @throws ConfigurationRuntimeException if an error occurs<a name="line.353"></a>
<FONT color="green">354</FONT>         */<a name="line.354"></a>
<FONT color="green">355</FONT>        public static Object createBean(BeanDeclaration data, Class&lt;?&gt; defaultClass)<a name="line.355"></a>
<FONT color="green">356</FONT>                throws ConfigurationRuntimeException<a name="line.356"></a>
<FONT color="green">357</FONT>        {<a name="line.357"></a>
<FONT color="green">358</FONT>            return createBean(data, defaultClass, null);<a name="line.358"></a>
<FONT color="green">359</FONT>        }<a name="line.359"></a>
<FONT color="green">360</FONT>    <a name="line.360"></a>
<FONT color="green">361</FONT>        /**<a name="line.361"></a>
<FONT color="green">362</FONT>         * Returns a bean instance for the specified declaration. This method is a<a name="line.362"></a>
<FONT color="green">363</FONT>         * short cut for {@code createBean(data, null);}.<a name="line.363"></a>
<FONT color="green">364</FONT>         *<a name="line.364"></a>
<FONT color="green">365</FONT>         * @param data the bean declaration<a name="line.365"></a>
<FONT color="green">366</FONT>         * @return the new bean<a name="line.366"></a>
<FONT color="green">367</FONT>         * @throws ConfigurationRuntimeException if an error occurs<a name="line.367"></a>
<FONT color="green">368</FONT>         */<a name="line.368"></a>
<FONT color="green">369</FONT>        public static Object createBean(BeanDeclaration data)<a name="line.369"></a>
<FONT color="green">370</FONT>                throws ConfigurationRuntimeException<a name="line.370"></a>
<FONT color="green">371</FONT>        {<a name="line.371"></a>
<FONT color="green">372</FONT>            return createBean(data, null);<a name="line.372"></a>
<FONT color="green">373</FONT>        }<a name="line.373"></a>
<FONT color="green">374</FONT>    <a name="line.374"></a>
<FONT color="green">375</FONT>        /**<a name="line.375"></a>
<FONT color="green">376</FONT>         * Returns a {@code java.lang.Class} object for the specified name.<a name="line.376"></a>
<FONT color="green">377</FONT>         * Because class loading can be tricky in some environments the code for<a name="line.377"></a>
<FONT color="green">378</FONT>         * retrieving a class by its name was extracted into this helper method. So<a name="line.378"></a>
<FONT color="green">379</FONT>         * if changes are necessary, they can be made at a single place.<a name="line.379"></a>
<FONT color="green">380</FONT>         *<a name="line.380"></a>
<FONT color="green">381</FONT>         * @param name the name of the class to be loaded<a name="line.381"></a>
<FONT color="green">382</FONT>         * @param callingClass the calling class<a name="line.382"></a>
<FONT color="green">383</FONT>         * @return the class object for the specified name<a name="line.383"></a>
<FONT color="green">384</FONT>         * @throws ClassNotFoundException if the class cannot be loaded<a name="line.384"></a>
<FONT color="green">385</FONT>         */<a name="line.385"></a>
<FONT color="green">386</FONT>        static Class&lt;?&gt; loadClass(String name, Class&lt;?&gt; callingClass)<a name="line.386"></a>
<FONT color="green">387</FONT>                throws ClassNotFoundException<a name="line.387"></a>
<FONT color="green">388</FONT>        {<a name="line.388"></a>
<FONT color="green">389</FONT>            return ClassUtils.getClass(name);<a name="line.389"></a>
<FONT color="green">390</FONT>        }<a name="line.390"></a>
<FONT color="green">391</FONT>    <a name="line.391"></a>
<FONT color="green">392</FONT>        /**<a name="line.392"></a>
<FONT color="green">393</FONT>         * Determines the class of the bean to be created. If the bean declaration<a name="line.393"></a>
<FONT color="green">394</FONT>         * contains a class name, this class is used. Otherwise it is checked<a name="line.394"></a>
<FONT color="green">395</FONT>         * whether a default class is provided. If this is not the case, the<a name="line.395"></a>
<FONT color="green">396</FONT>         * factory's default class is used. If this class is undefined, too, an<a name="line.396"></a>
<FONT color="green">397</FONT>         * exception is thrown.<a name="line.397"></a>
<FONT color="green">398</FONT>         *<a name="line.398"></a>
<FONT color="green">399</FONT>         * @param data the bean declaration<a name="line.399"></a>
<FONT color="green">400</FONT>         * @param defaultClass the default class<a name="line.400"></a>
<FONT color="green">401</FONT>         * @param factory the bean factory to use<a name="line.401"></a>
<FONT color="green">402</FONT>         * @return the class of the bean to be created<a name="line.402"></a>
<FONT color="green">403</FONT>         * @throws ConfigurationRuntimeException if the class cannot be determined<a name="line.403"></a>
<FONT color="green">404</FONT>         */<a name="line.404"></a>
<FONT color="green">405</FONT>        private static Class&lt;?&gt; fetchBeanClass(BeanDeclaration data,<a name="line.405"></a>
<FONT color="green">406</FONT>                Class&lt;?&gt; defaultClass, BeanFactory factory)<a name="line.406"></a>
<FONT color="green">407</FONT>                throws ConfigurationRuntimeException<a name="line.407"></a>
<FONT color="green">408</FONT>        {<a name="line.408"></a>
<FONT color="green">409</FONT>            String clsName = data.getBeanClassName();<a name="line.409"></a>
<FONT color="green">410</FONT>            if (clsName != null)<a name="line.410"></a>
<FONT color="green">411</FONT>            {<a name="line.411"></a>
<FONT color="green">412</FONT>                try<a name="line.412"></a>
<FONT color="green">413</FONT>                {<a name="line.413"></a>
<FONT color="green">414</FONT>                    return loadClass(clsName, factory.getClass());<a name="line.414"></a>
<FONT color="green">415</FONT>                }<a name="line.415"></a>
<FONT color="green">416</FONT>                catch (ClassNotFoundException cex)<a name="line.416"></a>
<FONT color="green">417</FONT>                {<a name="line.417"></a>
<FONT color="green">418</FONT>                    throw new ConfigurationRuntimeException(cex);<a name="line.418"></a>
<FONT color="green">419</FONT>                }<a name="line.419"></a>
<FONT color="green">420</FONT>            }<a name="line.420"></a>
<FONT color="green">421</FONT>    <a name="line.421"></a>
<FONT color="green">422</FONT>            if (defaultClass != null)<a name="line.422"></a>
<FONT color="green">423</FONT>            {<a name="line.423"></a>
<FONT color="green">424</FONT>                return defaultClass;<a name="line.424"></a>
<FONT color="green">425</FONT>            }<a name="line.425"></a>
<FONT color="green">426</FONT>    <a name="line.426"></a>
<FONT color="green">427</FONT>            Class&lt;?&gt; clazz = factory.getDefaultBeanClass();<a name="line.427"></a>
<FONT color="green">428</FONT>            if (clazz == null)<a name="line.428"></a>
<FONT color="green">429</FONT>            {<a name="line.429"></a>
<FONT color="green">430</FONT>                throw new ConfigurationRuntimeException(<a name="line.430"></a>
<FONT color="green">431</FONT>                        "Bean class is not specified!");<a name="line.431"></a>
<FONT color="green">432</FONT>            }<a name="line.432"></a>
<FONT color="green">433</FONT>            return clazz;<a name="line.433"></a>
<FONT color="green">434</FONT>        }<a name="line.434"></a>
<FONT color="green">435</FONT>    <a name="line.435"></a>
<FONT color="green">436</FONT>        /**<a name="line.436"></a>
<FONT color="green">437</FONT>         * Obtains the bean factory to use for creating the specified bean. This<a name="line.437"></a>
<FONT color="green">438</FONT>         * method will check whether a factory is specified in the bean declaration.<a name="line.438"></a>
<FONT color="green">439</FONT>         * If this is not the case, the default bean factory will be used.<a name="line.439"></a>
<FONT color="green">440</FONT>         *<a name="line.440"></a>
<FONT color="green">441</FONT>         * @param data the bean declaration<a name="line.441"></a>
<FONT color="green">442</FONT>         * @return the bean factory to use<a name="line.442"></a>
<FONT color="green">443</FONT>         * @throws ConfigurationRuntimeException if the factory cannot be determined<a name="line.443"></a>
<FONT color="green">444</FONT>         */<a name="line.444"></a>
<FONT color="green">445</FONT>        private static BeanFactory fetchBeanFactory(BeanDeclaration data)<a name="line.445"></a>
<FONT color="green">446</FONT>                throws ConfigurationRuntimeException<a name="line.446"></a>
<FONT color="green">447</FONT>        {<a name="line.447"></a>
<FONT color="green">448</FONT>            String factoryName = data.getBeanFactoryName();<a name="line.448"></a>
<FONT color="green">449</FONT>            if (factoryName != null)<a name="line.449"></a>
<FONT color="green">450</FONT>            {<a name="line.450"></a>
<FONT color="green">451</FONT>                BeanFactory factory = BEAN_FACTORIES.get(factoryName);<a name="line.451"></a>
<FONT color="green">452</FONT>                if (factory == null)<a name="line.452"></a>
<FONT color="green">453</FONT>                {<a name="line.453"></a>
<FONT color="green">454</FONT>                    throw new ConfigurationRuntimeException(<a name="line.454"></a>
<FONT color="green">455</FONT>                            "Unknown bean factory: " + factoryName);<a name="line.455"></a>
<FONT color="green">456</FONT>                }<a name="line.456"></a>
<FONT color="green">457</FONT>                else<a name="line.457"></a>
<FONT color="green">458</FONT>                {<a name="line.458"></a>
<FONT color="green">459</FONT>                    return factory;<a name="line.459"></a>
<FONT color="green">460</FONT>                }<a name="line.460"></a>
<FONT color="green">461</FONT>            }<a name="line.461"></a>
<FONT color="green">462</FONT>            else<a name="line.462"></a>
<FONT color="green">463</FONT>            {<a name="line.463"></a>
<FONT color="green">464</FONT>                return getDefaultBeanFactory();<a name="line.464"></a>
<FONT color="green">465</FONT>            }<a name="line.465"></a>
<FONT color="green">466</FONT>        }<a name="line.466"></a>
<FONT color="green">467</FONT>    }<a name="line.467"></a>




























































</PRE>
</BODY>
</HTML>
